Integrated DMS device for vehicle
By highly integrating the DMS camera and controller to form an integrated DMS device, the problems of large structure and high cost in the existing technology are solved, miniaturization and lightweight are achieved, and costs are reduced, making it suitable for use in cost- and weight-sensitive vehicles.
Patent Information
- Application Number
- CN202422645536.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing DMS devices are large in structure, high in cost, require a lot of space for cable layout, and the cost of video cables is relatively high, making it difficult to meet the cost- and space-sensitive needs of automobiles.
The DMS camera and DMS controller are highly integrated to form an integrated DMS device, including a fill light circuit board, camera, SOC PCB board, MCU PCB board, front shell, back shell and base. It is installed on the car's A-pillar with screws, eliminating the LVDS coaxial video cable and achieving miniaturization and lightweight.
The DMS device is miniaturized and lightweight, which reduces costs, improves working performance, is easy to install, and has a beautiful appearance. It is suitable for use in cost- and weight-sensitive vehicles.
Smart Images
Figure CN223314939U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for supervising and prompting a car driver while driving, in particular to an integrated DMS device for a car, belonging to the technical field of vehicle driving monitoring. Background Art
[0002] Cars have become an essential means of transportation. To ensure safety while driving, drivers can also be monitored. This effectively monitors and alerts drivers to improper driving practices and behaviors, improving driving safety. This involves activating and installing a DMS device in the vehicle's cab. The DMS is a real-time system that determines the driver's status based on facial features, physiological indicators, or vehicle information. It primarily performs driver identification, fatigue monitoring, distraction detection, and monitoring for dangerous driving behaviors (such as drunk driving, hand-held phone calls, and drinking water). When these conditions are met, it issues alerts via the vehicle's CAN communication. The monitoring device also transmits the original images captured by the DMS to a domain controller via an LVDS coaxial cable for high-level integrated control.
[0003] However, the current existing DMS device structure is generally composed of a DMS camera, an LVDS coaxial video cable, and a DMS domain controller. Generally, the DMS domain controller is large in size, and the video requires an LVDS coaxial video cable for transmission, which has high requirements for the impedance of the coaxial video cable, making the coaxial video cable costly. At the same time, the coaxial video cable has a large routing angle, which has high requirements for cable layout space. The DMS device highly integrates the DMS camera, DMS and controller while only doubling the size of the original DMS camera, eliminating the LVDS coaxial video cable. Without reducing the DMS performance, it achieves miniaturization, lightweighting and a significant reduction in component costs. It is suitable for cars with high cost requirements and complete vehicles that are sensitive to optional configurations and weight requirements. Utility Model Content
[0004] The purpose of the present utility model is to address the problems existing in the above-mentioned prior art and to propose an integrated vehicle DMS device, which has a reasonable structure, is reliable in use, is miniaturized and lightweight, effectively reduces costs, has a long service life, and can maximize working performance.
[0005] To achieve the above objectives, the present invention provides an integrated DMS device for a vehicle, including an A-pillar, characterized in that: the integrated DMS device mainly includes a fill light circuit board, a camera, a SOC PCB board, an MCU PCB board, a front shell, a rear shell and a base, positioning cavities are formed in the front and rear shells, a protrusion is raised on the lower part of the front surface of the front shell, and the base is integrally injection-molded from a base and left and right brackets; the integrated DMS device is assembled by integrating the fill light circuit board, camera, SOC PCB board and MCU PCB board into the positioning cavities of the front and rear shells, and then cooperating with the base on the base for installation, and finally being installed on the A-pillar of the vehicle by the left and right brackets respectively using screws.
[0006] Furthermore, the fill light circuit board is fixed to the front shell protrusion by two positioning pins and three screws, and the fill light circuit board connector is docked with the MCU PCB board connector through the pre-designed hole on the front shell to drive the fill light to work.
[0007] Furthermore, the camera includes a lens, a lens holder and a camera sensor. The lens and the lens holder are fixed to the SOC PCB board by bonding with low-temperature epoxy glue on the PCB, and the camera sensor is integrated on the SOC PCB board; the camera lens is connected to the protrusion of the front shell, and the camera lens is clamped to the protrusion by buckles at both ends. The lens and the camera lens are connected by foam, and the foam here is used to isolate stray light and reduce vibration.
[0008] Furthermore, the SOC PCB board integrates a SOC chip and two MCU PCB board interfaces. The SOC chip is adhered to the front shell through silicone grease, and the SOC PCB board is fixed to the front shell through three screws in three directions; the MCU PCB board is connected to the SOC PCB board through the two MCU PCB board interfaces on the SOC PCB board to supply power to the SOC PCB board and transmit internal signals. At the same time, the MCU PCB board is positioned through the positioning cavities in the front shell and the rear shell.
[0009] Furthermore, the MCU PCB board integrates an MCU chip, a power chip, a voltage regulator chip, several resistors, a burning interface, a power signal interface, a video transmission interface, a fill light circuit board interface and an MCU PCB board interface. The end faces of the MCU chip and the power chip are adhered to the rear shell through silicone grease; the MCU PCB board obtains driving power from the outside through the power signal interface, and processes the power through the power chip, the voltage regulator chip and several resistors to power and control the SOC PCB board and the fill light circuit board.
[0010] Furthermore, the four corners of the rear shell are connected to the front shell by screws, and the rear shell is pressed against the MCU PCB board. The power signal interface and video transmission interface on the MCU PCB board exposed from the rear shell are used to connect to other parts of the car, so that the DMS device can be connected to the car, obtain power supply and car signals, and output video signals and processed control signals.
[0011] Furthermore, a heat sink is provided on the front surface of the front shell to dissipate the heat generated by the operation of the SOC chip through the heat sink on the front shell.
[0012] Furthermore, a heat sink is provided on the rear shell to dissipate the heat generated by the MCU chip through the heat sink on the back of the rear shell.
[0013] This utility model positions and integrates the fill light circuit board, camera, MCU PCB, and SOC PCB through the positioning cavities of the front and rear housings. The board is then assembled with the base on the chassis and finally mounted to the vehicle's A-pillar using two screws. Installation is reliable and convenient, with a clearly rational structure and a tight, organized structure. The DMS device is powered by the main connector. The DMS transmits the driver status processed by the SOC chip via CAN messages (or Controller Area Network) via the CAN pins (or Controller Area Network bus pins) in the main connector to the vehicle's instrument cluster. The instrument cluster issues a visual alarm and a voice prompt to the central control screen. The original image captured by the MS device can be transmitted to the domain controller via the video output Fakra interface for high-level integrated control. Fakra is known in the industry as the Fakra connector. Fakra is named after the German automotive industry group. "FAKRA" is the German abbreviation for the automotive expert group "FAchKReis Automobile." BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described below with reference to the accompanying drawings.
[0015] Figure 1 This is a schematic diagram of the overall device of the utility model.
[0016] Figure 2 This is a schematic diagram of the decomposition of the camera of the present invention.
[0017] Figure 3 This is a front schematic diagram of the front shell of the utility model.
[0018] Figure 4 This is a schematic diagram of the back side of the front shell of the present invention.
[0019] Figure 5 This is a front view of the rear shell of the present invention.
[0020] Figure 6This is a schematic diagram of the back side of the rear shell of the present invention.
[0021] Figure 7 It is a schematic diagram of the overall structure of the utility model.
[0022] Among them: A-front shell, B-back shell, D-base, a-bump, c-left bracket or right bracket, d-base, 1-fill light circuit board, 2-SOC PCB board, 3-MCU PCB board, 4-lens, 5-lens bracket, 6-camera lens, 7-foam, 8-heat sink. DETAILED DESCRIPTION
[0023] Example 1
[0024] The first embodiment of the present invention is an integrated vehicle DMS device, which is as follows Figure 1-7 As shown, including the A-pillar, the integrated DMS device mainly includes a fill light circuit board 1, a camera, a SOC PCB board 2, an MCU PCB board 3, a front shell A, a rear shell B and a base D. A positioning cavity is formed in the front shell A and the rear shell B. A bulge a is raised on the lower part of the front of the front shell A. The base D is formed by injection molding of the base d, the left bracket c and the right bracket c as a whole. Figure 1 shown; combined Figure 7 : This integrated DMS device is assembled by integrating the fill light circuit board 1, camera, SOC PCB board 2 and MCU PCB board 3 into the positioning cavity of the front shell A and the rear shell B, and then installed in conjunction with the base d on the base D. Finally, the left bracket c and the right bracket c are respectively installed on the car's A-pillar by screws.
[0025] In this embodiment, the fill light circuit board 1 is fixed to the protrusion a of the front shell A by two positioning pins and three screws, and the connector of the fill light circuit board 1 is connected to the connector of the MCU PCB board 3 through the pre-designed hole on the front shell A to drive the fill light to work; Figure 1 、 2 As shown. Combined with Figure 1 :The camera includes a lens 4, a lens bracket 5 and a camera sensor. The lens 4 and the lens bracket 5 are fixed on the SOC PCB board 2 by PCB bonding with low-temperature epoxy glue. The camera sensor is integrated on the SOC PCB board 2. Figure 3 : A camera lens 6 is connected to the protrusion a of the front shell A, and the camera lens 6 is clamped on the protrusion through the buckles at both ends. The lens 4 and the camera lens 6 are connected by foam 7, where the foam 7 is used to isolate stray light and reduce vibration.
[0026] Among them, the SOC PCB board 2 integrates the SOC chip and two MCU PCB board interfaces. The SOC chip is attached to the front shell A through silicone grease, and the SOC PCB board 2 is fixed to the front shell A through three screws in three directions; the MCU PCB board 3 is connected to the SOC PCB board 2 through the two MCU PCB board interfaces on the SOC PCB board 2 to supply power to the SOC PCB board 2 and transmit internal signals. At the same time, the MCU PCB board 3 is positioned through the positioning cavity in the front shell A and the rear shell B; combined with Figure 3 : A heat sink 8 is provided on the front of the front shell A to dissipate the heat generated by the SOC chip.
[0027] Among them, the MCU PCB board 3 integrates the MCU chip, power chip, voltage regulator chip, several resistors, burning interface, power signal interface, video transmission interface, fill light circuit board interface and MCU PCB board interface. The end faces of the MCU chip and power chip are adhered to the rear shell B with silicone grease; the MCU PCB board 2 obtains driving power from the outside through the power signal interface, and processes the power through the power chip, voltage regulator chip, and several resistors to power and control the SOC PCB board 2 and fill light circuit board 1.
[0028] Combine Figure 4 、 5 6: The four corners of the rear shell are connected to the front shell A through screws, and the rear shell is pressed against the MCU PCB board 3. The power signal interface and video transmission interface on the MCU PCB board 3 exposed on the rear shell B are connected to other parts of the car, so that the DMS device can be connected to the car, obtain power and car signals, and output video signals and processed control signals. Figure 6 : A heat sink 8 is provided on the back of the rear shell B to dissipate the heat generated by the MCU chip through the heat sink 8 on the rear shell B.
[0029] The present invention's operating principle: This invention only provides the integrated DMS device structure; the internal wiring remains conventional. This invention utilizes a camera sensor to capture images of the driver's driving status and transmits these signals to the SOC chip. The SOC chip uses a neural network algorithm to identify the driver's driving status and simultaneously provides feedback to the MCU chip. The MCU chip then implements an alarm strategy and sends a signal to the vehicle's human-machine interface, alerting the driver. This embodiment demonstrates that the integrated DMS device provides convenience and speed for the aforementioned operating process, quickly achieving the goal of monitoring and providing driver guidance.
[0030] The DMS device in Example 1 is secured to the mounting post on the vehicle's A-pillar using two screws. The edges of the mounting post, combined with the reinforcement ribs on the DMS device's base (D), provide a positioning function, ensuring precise installation. The device is ultimately installed inside the vehicle's A-pillar. Compared to existing DMS devices with dispersed components, this device shortens some cables and also facilitates integration. This results in a simple, aesthetically pleasing structural design and a compact layout. It also offers reliable and convenient installation and use, low cost, easy control during operation, and a harmonious and aesthetically pleasing appearance.
[0031] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.
Claims
1. An integrated DMS device for a vehicle, including an A-pillar, characterized in that: The integrated DMS device mainly includes a fill light circuit board, a camera, a SOC PCB board, an MCU PCB board, a front shell, a rear shell and a base. Positioning cavities are formed in the front and rear shells, and a bulge is raised on the lower part of the front surface of the front shell. The base is injection-molded as a whole from a base and left and right brackets. The integrated DMS device is assembled by integrating the fill light circuit board, camera, SOC PCB board and MCU PCB board into the positioning cavities of the front and rear shells, and then cooperating with the base on the base for installation. Finally, the left and right brackets are respectively installed on the A-pillar of the car by screws.
2. The vehicle-use integrated DMS device according to claim 1, characterized in that: The fill light circuit board is fixed to the front shell protrusion by two positioning pins and three screws. At the same time, the fill light circuit board connector is connected to the MCU PCB board connector through the pre-designed hole on the front shell to drive the fill light to work.
3. The vehicle-use integrated DMS device according to claim 1, characterized in that: The camera includes a lens, a lens bracket and a camera sensor. The lens and the lens bracket are fixed to the SOC PCB board by bonding the PCB with low-temperature epoxy glue. The camera sensor is integrated into the SOC PCB board. The camera lens is connected to the protrusion of the front shell. The camera lens is clamped to the protrusion by buckles at both ends. The lens and the camera lens are connected by foam, where the foam is used to isolate stray light and reduce vibration.
4. The vehicle-use integrated DMS device according to claim 1, characterized in that: The SOC PCB board integrates an SOC chip and two MCU PCB board interfaces. The SOC chip is adhered to the front shell through silicone grease, and the SOC PCB board is fixed to the front shell through three screws in three directions; the MCU PCB board is connected to the SOC PCB board through the two MCU PCB board interfaces on the SOC PCB board, supplying power to the SOC PCB board and transmitting internal signals. At the same time, the MCU PCB board is positioned through the positioning cavities in the front and rear shells.
5. The vehicle-use integrated DMS device according to claim 1, characterized in that: The MCU PCB board integrates an MCU chip, a power chip, a voltage regulator chip, several resistors, a burning interface, a power signal interface, a video transmission interface, a fill light circuit board interface and an MCU PCB board interface. The end faces of the MCU chip and the power chip are adhered to the rear shell through silicone grease; the MCU PCB board obtains driving power from the outside through the power signal interface, and processes the power through the power chip, the voltage regulator chip and several resistors to power and control the SOC PCB board and the fill light circuit board.
6. The vehicle-use integrated DMS device according to claim 5, characterized in that: The four corners of the rear shell are connected to the front shell by screws, and the rear shell is pressed against the MCU PCB board. The power signal interface and video transmission interface on the MCU PCB board exposed from the rear shell are used to connect to other parts of the car, so that the DMS device can be connected to the car, obtain power and car signals, and output video signals and processed control signals.
7. The vehicle-use integrated DMS device according to claim 4, characterized in that: A heat sink is provided on the front surface of the front shell to dissipate the heat generated by the SOC chip during operation through the heat sink on the front shell.
8. The vehicle-use integrated DMS device according to claim 5, characterized in that: A heat sink is provided on the back of the rear shell to dissipate the heat generated by the MCU chip during operation through the heat sink on the rear shell.